This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 3125 |
| 2 | 100000 |
| 3 | 759375 |
| 4 | 3200000 |
| 5 | 9765625 |
| 6 | 24300000 |
| 7 | 52521875 |
| 8 | 102400000 |
| 9 | 184528125 |
| 10 | 312500000 |
| 11 | 503284375 |
| 12 | 777600000 |
| 13 | 1160290625 |
| 14 | 1680700000 |
| 15 | 2373046875 |
| 16 | 3276800000 |
| 17 | 4437053125 |
| 18 | 5904900000 |
| 19 | 7737809375 |
| 20 | 10000000000 |
| 21 | 12762815625 |
| 22 | 16105100000 |
| 23 | 20113571875 |
| 24 | 24883200000 |